Patents by Inventor MELVIN L. HUGHES

MELVIN L. HUGHES has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adjustable frequency drive and system
    Patent number: 8508181
    Abstract: An adjustable frequency drive includes a base having a first portion and a second portion, and an active front end converter disposed on the base. The converter includes an input, an output, and a plurality of first electronic switches electrically connected between the input and the output. An inverter is disposed on the base and includes an input electrically connected to the output of the active front end converter, an output, a plurality of capacitors disposed on the first portion of the base and electrically connected to the input of the inverter, a plurality of second electronic switches disposed on the second portion of the base and electrically connected between the input and the output of the inverter, and a heat pipe assembly. The inverter is structured to provide a single, three-phase output structure.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: August 13, 2013
    Assignee: Eaton Corporation
    Inventors: Harry Broussard, Melvin L. Hughes
  • ADJUSTABLE FREQUENCY DRIVE AND SYSTEM
    Publication number: 20100327799
    Abstract: An adjustable frequency drive includes a base having a first portion and a second portion, and an active front end converter disposed on the base. The converter includes an input, an output, and a plurality of first electronic switches electrically connected between the input and the output. An inverter is disposed on the base and includes an input electrically connected to the output of the active front end converter, an output, a plurality of capacitors disposed on the first portion of the base and electrically connected to the input of the inverter, a plurality of second electronic switches disposed on the second portion of the base and electrically connected between the input and the output of the inverter, and a heat pipe assembly. The inverter is structured to provide a single, three-phase output structure.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: HARRY BROUSSARD, MELVIN L. HUGHES